English Exercises - Grade 11 Leâ Ngoïc Thaïch UNIT 10: NATURE IN DANGER A. PHONETICS I. Circle the word whose underlined part is pronounced differently from that of the other words. 1) A. supply B. dirty C. energy D. happy 2) A. decreased B. influenced C. endangered D. established 3) A. answer B. sweater C. swim D. switch II. Circle the word that has stress pattern different from that of the other words. 4) A. nature B. danger C. human D. environment 5) A. exist B. species C. effect D. condition 6) A. forest B. water C. destroy D. industry B. VOCABULARY AND GRAMMAR * Circle the best answer for each sentence. 7) Many rare ____ of animals are in danger of extinction. A. species B. classes C. beings D. pairs 8) People are destroying the environment by adding ____ to it. A. pollutes B. pollutions C. pollutives D. pollutants 9) Many efforts have been made to protect ____ nature. A. danger B. dangerous C. endanger D. endangered 10) Many species of animals are threatened and could easily become ____. A. disappeared B. vanished C. empty D. extinct 11) Many animals are ____ for their fur and other valuable parts of their bodies. A. hunted B. chased C. run after D. followed 12) They started a campaign to ____ smoking among teenagers. A. encourage B. decrease C. discourage D. prohibit 13) Dinosaurs became ____ millions of years go. A. disappear B. extinct C. lost D. endangered 14) The chemical ____ from cars and factories make the air, water and soil dangerously dirty. A. pollution B. polluted C. pollutants D. pollute 15) Human beings are ____ for the changes in the environment. A. account B. faulty C. blame D. responsible 16) By cutting down trees, we ____ the natural habitat of birds and animals. A. hurt B. would C. damage D. injure 17) __ aren’t effective anymore because insects have become resistant to them. 1 English Exercises - Grade 11 Leâ Ngoïc Thaïch A. Fertilizer B. Pesticides C. Herbicides D. Composts 18) They started a campaign to ____ smoking among teenagers. A. encourage B. decrease C. discourage D. prohibit 19) He is the singer about ____ I often tell you. A. that B. who C. whom D. him 20) The concert ____ I listened last weekend was boring. A. to that B. to which C. for what D. for which 21) That’s the girl to ____ my brother got engaged. A. which B. who C. whom D. her 22) I like the village ____ I used to live. A. in that B. in where C. which D. in which 23) I don’t know the reason ____ she hasn’t talked to me recently. A. on which B. for which C. of which D. about which 24) The little girl ____ I borrowed this pen has gone. A. whose B. from who C. from that D. from whom 25) The speech ___ we listened last night was information. A. to which B. which to C. to that D. that 26) The boy to ____ I lent my money is poor. A. that B. who C. whom D. B and C 27) The knife ____ we cut bread is very sharp. A. with that B. which C. with which D. that 28) The authority gathered those villagers ____ they explained the importance of forests. A. who B. whom C. to whom D. to that C. READING * Read the passage carefully then circle the correct answers. Many environmental experts are pessimistic about the future of our (29) ____. They say that in the next few years harmful (30) ____ will further damage the (31) ____ layer, there will be more losses of irreplaceable tropical (32) ____, and serious (33) ____ pollution will cause the (34) ____ itself to change. They also warm us that Third World (35 ____ will continue to suffer ecological (36) ____, while the (37) ____ countries consume the vast majority of the world’s (38) ____. Animals are also at (39) ____. It is feared that some (40) ____ species may soon die out, as their natural (41) ____ are destroyed. In some cases, the only way to save rare species from (42) ____ is to breed them in (43) ____. 29) A. country B. planet C. society D. life 30) A. chemicals B. animals C. species D. plants 2 English Exercises - Grade 11 Leâ Ngoïc Thaïch 31) A. oxygen B. dioxide C. carbon D. ozone 32) A. climate B. weather C. rainforests D. rain 33) A. air B. land C. soil D. noise 34) A. weather B. rain C. climate D. storm 35) A. representatives B. countries C. parties D. governments 36) A. results B. disasters C. consequences D. problems 37) A. poor B. developing C. European D. rich 38) A. sources B. fuels C. materials D. resources 39) A. risk B. danger C. accidents D. unfortunate 40) A. savage B. dangerous C. endangered D. dangered 41) A. environment B. habitats C. resources D. disasters 42) A. distinction B. instinct C. extension D. extinction 43) A. captivity B. caption C. captive D. capsule D. WRITING * Circle the underlined part among A, B, C or D that needs correcting . 43) I have two brothers, both of them are studying in England. A B C D 43) It was a kind of machine with that we were not familiar. A B C D 44) Radio stations at which broadcast only news first appeared in the 1970s. A B C D 45) It is right that politicians should make important decisions without consulting A B C the public to who they are accountable? D 46) The song to that we listened last night was beautiful. A B C D 3 . damage D. injure 17) __ aren’t effective anymore because insects have become resistant to them. 1 English Exercises - Grade 11 Leâ Ngoïc Thaïch A. Fertilizer. English Exercises - Grade 11 Leâ Ngoïc Thaïch UNIT 10: NATURE IN DANGER A. PHONETICS I. Circle the word whose underlined part is pronounced differently